Incandescent gas-lamp.



Patented Oct. 7, |902.

L. D. FRENUT & A. GIMUNET.

INCANDESCENT GAS LAMP.

(Application tiled Apr. 9, 1901.)

(No Model.)

Wit nem@ UNiTEn STATES PATENT OEEICE.

LOUIS D. ERENOT AND ALEXANDRE GIMONET, OE NEWARK, NEWT JERSEY.

INCNDESCENT GAS-LAM P.

SPECFICATION forming part of Letters Patent No. 710,446, dated October "i, 1902.

Application tiled April 9, 1901. Serial No. 55,048. (No model.)

To all 1071/0771, it may concern:

Beit known that we, LOUIS D. FRENOT and ALEXANDRE GLuoNnr, citizens of the United States, residing at the city of Newark, Essex coun ty,New Jersey,have invented certain new and useful Improvements in Incandescent Gas-Lamps; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to incandescent lamps in general, but especially to incandescent gas-lamps, the object of the invention being to provide improved constructions of the various parts hereinafter enumerated, whereby a complete lamp of extremely simple construction and improved operation and results is assured.

With this objectin view the invention consists in the improved construction, arrangement, and combination of various parts of an incandescent lamp, hereinafter fully described and afterward specifically claimed.

In the accompanying drawings, Figure 1 is a view in elevation', partly in vertical section, illustrating a lampcomplete constructed in accordance with this invention. Fig. 2 is a view in perspective, on an enlarged scale, partly broken away, showing the gallery and the lower part of the chimney in position thereon. enlarged scale, showing the lower portion of the burner-tube and the air-regulating devices.

Like numerals of reference indicate the same parts wherever they occur in the various figures.

Referring to the drawings by numerals, 1 indicates the burner-tube, which is of enlarged diameter at its lower end, forming a mixing-chamber, as at 2, and provided with openings 3, to admit a given quantity of air at all times, and openings il, regulated by a turning ring 5, having corresponding openings 6 to admit more or less air, as may be required,in addition to that admitted through openings 3 to insure perfect combustion of the gas. The lower end of tube 1 in the mixing-chamber 2 is interiorly threaded to receive a gas-nipple 7, which projects when inserted into the mixing-chamber and is pro- Fig. 3 is a View in section, on anvided with jet-openings S to admit gas at substantially the level of the openings 4, the nipple being interiorly threaded, as at 9, to fit on the thread of any ordinary gas-supply pipe. The outer upper portion of the tube 1 is smooth, as at 10, to receive an ordinary globe-holder 11 to support a globe 12, while above the globe-holder is slipped upon the smooth portion 10 a gallery 13 to hold a chimney 14 in the usual manner. It will be 0bserved, however, that the gallery 13 differs from chimney-galleries of ordinary construction in that its door is solid or imperforate, while ordinary galleries are of perforated or open work to admit draft to the blaze. In this instance,however,the chimney employed with the imperforate gallery is provided with .a series of holes 15 to admit draft to the blaze.

16 indicates a metal cap adapted to be loosely slipped over the open top of the tube 1, said cap having its top made of Wire-gauze, as at 17, and being provided on one side, as at 18, with a boss, bored vertically to receive a wire 19, which supports the incandescent mantle 20, said wire being vertically adjustable in the boss 18 and held at any adjustment by means of a set-screw 21.

The globe 12 may be of any ordinary construction and is provided with fenders or cushions 22 in suitable number, composed of asbestos or similar non-heat-conducting material, secured upon the globe by a Wire ring 23. An ordinary shade 24 is supported upon the globe, resting upon the fenders or cushions 22, thereby preventing the contact of the two hard substances and reducing the liability of breakage, and at the same time, owing to the non-conducting vcharacter of the fenders or cushions, preventing the heating of the shade.

The means employed for regulating the supply of air to the integral mixing-chamber 2 and tube 1 and of draft to the blaze insure the most perfect combustion, and thereby economize in the quantity of gas required to heat the mantle to incandescence, as well as preserving the usefulness of the mantle for a longer time, owing to the absence of thev products of imperfect combustion. By actual experiment we have found our combination of an imperforate gallery and a perforate chim- IOO ney to be more productive of results than the reverse, as in ordinary use. The draft-holes in the chimney bein;r located on the level with and extending slightly above the wire- `@,auze 17 supply the air at the proper height With reference to the blaze to produce the best results.

Vhile We have specically described the construction of the various parts, it Will be readily understood by those skilled in the art that many of them may be somewhat varied in construction and relation with each other Without departing from the spirit and scope of our invention.

Having thus fully described our invention, what We claim as new, and desire to secure by Letters Patent of the United States, s-

An incandescent gas-burner comprising' a `gas-tube smooth for some distance from the top,a perforate globe-holder u pon said smooth LOUIS D. FRENOT. ALEXANDRE GIMONET.

Witnesses:

GEO. M. TITUs, l EDWARD G. KEMPF. 

